San Augustine and Sabine Counties, Texas
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in San Augustine and Sabine Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Water | 95K | D | Not rated | Not rated | |
| Moswell loam, 1 to 5 percent slopes | 62K | Well drained | D | Very limited | Very limited |
| Moswell loam, 5 to 15 percent slopes | 42K | Well drained | D | Very limited | Very limited |
| Cuthbert fine sandy loam, 5 to 15 percent slopes | 39K | Well drained | C | Somewhat limited | Very limited |
| Metcalf-Sawtown complex, 0 to 2 percent slopes | 30K | Somewhat poorly drained | C | Very limited | Very limited |
| Mattex-Iulus complex, 0 to 1 percent slopes, frequently flooded | 29K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Kirvin fine sandy loam, 1 to 5 percent slopes | 25K | Well drained | C | Somewhat limited | Very limited |
| Eastwood very fine sandy loam, 1 to 5 percent slopes | 23K | Well drained | C | Very limited | Very limited |
| Laneville loam, 0 to 1 percent slopes, frequently flooded | 17K | Moderately well drained | C/D | Very limited | Very limited |
| Tenaha loamy fine sand, 1 to 5 percent slopes | 17K | Well drained | B | Not limited | Very limited |
| Trawick gravelly clay loam, 5 to 15 percent slopes | 17K | Well drained | C | Somewhat limited | Very limited |
| Tenaha loamy fine sand, 5 to 15 percent slopes | 16K | Well drained | B | Somewhat limited | Very limited |
| Nacogdoches clay loam, 1 to 5 percent slopes | 16K | Well drained | C | Somewhat limited | Very limited |
| Penning-Kurth complex, 0 to 2 percent slopes | 14K | Moderately well drained | C | Somewhat limited | Very limited |
| Eastwood very fine sandy loam, 5 to 15 percent slopes | 13K | Well drained | D | Very limited | Very limited |
| Raylake clay, 1 to 5 percent slopes | 13K | Somewhat poorly drained | D | Very limited | Very limited |
| Iulus fine sandy loam, 0 to 1 percent slopes, occasionally flooded | 13K | Moderately well drained | C | Very limited | Very limited |
| Nacogdoches fine sandy loam, 1 to 5 percent slopes | 12K | Well drained | C | Somewhat limited | Very limited |
| Kurth fine sandy loam, 1 to 3 percent slopes | 11K | Moderately well drained | C | Somewhat limited | Very limited |
| Bowie fine sandy loam, 1 to 5 percent slopes | 11K | Well drained | B | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 46% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 81% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.